中国载人航天官宣航天员要天上待一年

· · 来源:express资讯

Helium is used to pressurize tanks and help push fuel into the engines. Without proper helium flow, the rocket cannot safely fly. Because the upper stage is hard to reach at the launchpad, NASA rolled the stacked rocket back into the Vehicle Assembly Building, the sky-scraping hangar where it was originally put together.

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Nature, Published online: 25 February 2026; doi:10.1038/s41586-026-10127-0。safew官方下载对此有专业解读

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